JPH01103893U

JPH01103893U -

Info

Publication number: JPH01103893U
Application number: JP18369087U
Authority: JP
Priority date: 1987-12-03
Filing date: 1987-12-03
Publication date: 1989-07-13

Description

[Brief explanation of the drawing]

第１図は本考案のスイツチ構造を示すそれぞれ
平面図、断面図及び底面図、第２図は第１図のス
イツチを鍵盤に組み付けた様子を示す断面図、第
３図は第２図のように組み付けたスイツチの動作
を示すそれぞれ断面図、第４図は本考案の変形例
を示すそれぞれ断面図及び等価的な模式図、第５
乃至７図は従来例を示すそれぞれ断面図である。１１……スイツチ、１３……ブレーク可動接点
、１５……メーク可動接点、１７……腕部、１９
ａ，１９ｂ……内側ドーム、２１……外郭、２３
ａ，２３ｂ……外側ドーム、２５……突出部、２
７……押圧環、２９……キヤビテイ、３１……空
気穴、３３……基板、３５……取り付け具、３７
……鍵盤フレーム、３９……鍵、４１……ばね、
４３……アクチユエータ、４５……ストツプフエ
ルト、４７……レベルフエルト、４９……突出部
、５１ａ，５１ｂ……固定接点、５３……ブレー
ク側の上端部。 Figure 1 is a plan view, sectional view, and bottom view showing the switch structure of the present invention, Figure 2 is a sectional view showing how the switch in Figure 1 is assembled to a keyboard, and Figure 3 is as shown in Figure 2. 4 is a sectional view showing the operation of the switch assembled in the present invention, FIG. 4 is a sectional view showing a modification of the present invention, and an equivalent schematic diagram is shown in FIG.
7 to 7 are cross-sectional views showing conventional examples. 11...Switch, 13...Break movable contact, 15...Make movable contact, 17...Arm portion, 19
a, 19b...Inner dome, 21...Outer shell, 23
a, 23b...Outer dome, 25...Protrusion, 2
7... Pressing ring, 29... Cavity, 31... Air hole, 33... Board, 35... Mounting tool, 37
...keyboard frame, 39...key, 41...spring,
43... Actuator, 45... Stop felt, 47... Level felt, 49... Projection, 51a, 51b... Fixed contact, 53... Upper end on break side.

Claims

[Claims for Utility Model Registration] 1. A break-make type switch structure that detects the depressing speed of a keyboard device as a time difference between the switching operations of two switches, and performs initial control based on this detection signal. A touch response device for an electronic musical instrument, comprising: (a) an outer shell formed of a flexible member; and (b) an elastic part elastically attached to one side of the outer shell. are integrally connected so that they can be rotated back to
It is capable of swinging like a seesaw around the fulcrum part, and a first movable contact is provided on one side of the fulcrum part, and a second movable contact is provided on the other side of the fulcrum part,
and (c) first and second movable contacts provided on the substrate and facing and abutting the first and second movable contacts.
a fixed contact, and when the arm part is not pressing the pressed part, one first movable contact is always in contact with the first fixed contact of the related board by the elastic member. state, and the other second movable contact is in a non-contact state with the associated second fixed contact, and when the arm part presses the pressed part, the one first movable contact A touch response device, characterized in that the movable contact is spaced apart from the first fixed contact, and the other second movable contact is brought into contact with the second fixed contact of the associated substrate. 2. A space surrounded by the arm, the elastic member, the shell, and the base plate in a sealed or almost sealed manner and surrounded by the fulcrum of the key exists in a divided space divided into two parts. 2. The touch response device according to claim 1, wherein the fulcrum portion is provided with a vent for air movement so that air can move alternately through these divided spaces.